A mysterious and intense X-ray source near the black hole shines onto the surface layers of the accretion disk, causing iron atoms to radiate characteristic emission -- what astronomers call the iron K line -- at about 6,000 to 7,000 electron volts. The inner part of the disk is orbiting the black h...

Coming to theaters November 22nd, 2013... Watch the trailer and experience the phenomenon like never before, only at the Hunger Games Explorer!

How big can they get? What's the largest so far detected? Where does an 18 billion solar mass black hole hide? We've never seen them directly, yet we know they are there. Lurking within dense star clusters or wandering the dust lanes of the galaxy. Where they prey on stars. Or swallow planets whole....

Sergey Lazarev, 35, is from Moscow, Russia. He represented Russia at Eurovision Song Contest 2016 in Stockholm. Since early childhood he has trained his performance and voice for the big stage. Until his 10th birthday he made rhythmic gymnastics and sang in a children's choir.

Adele sings in dedication to those affected by the terrorist attacks in Brussels. She asks everyone to switch on their phone torches in support.

A promo about 2012 london olympics and the gymasts that may or may not compete in that year.

With the tide of war in Ukraine turning against Putin and Russia, worries about a nuclear attack have increased interest in a fixture of the Cold War: underground bunkers.

I’ve only rarely sung this song in the many years since it was written, because I never thought it would be relevant again. But, in the light of one man’s bloody and woefully misguided decision to invade a peaceful, unthreatening neighbor, the song is, once again, a plea for our common humanity. For

Gymnast Agnes Keleti is a 10-time Olympic medallist. At 100 years old, she’s also the oldest living Olympic Champion. And when she sees the new generation of athletes like Team GB's youngest Olympian, Sky Brown, she knows that together, we’re stronger than the darkness can ever be.

Lee Daniels, director of 2009's Precious, sat down with Larry King to discuss, among other things, his new movie The Butler and how his perspective as a gay, black man influenced the film's focus on the civil rights movement. Later, Daniels shared his own story of growing up gay and the continued st...